Also: While World of Warcraft topped the PC charts, its average minutes played per week dropped from 1023 in 2007 to 671 in 2008, or from about 17 hours per week to only 11. Sound significant? We'll see. We definitely need more data to gauge whether the juggernaut's peaking, subscriber base increases or no. (Note that Nielsen's numbers predate the Wrath of the Lich King expansion in November, which might've skewed everything more favorably.)